实现带描边的圆角图片

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1、布局文件

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/frameLayout1"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >   </FrameLayout>

2、MainActivity

public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        FrameLayout ll = (FrameLayout)findViewById(R.id.frameLayout1);        ll.addView(new MyView(this));    }    public class MyView extends View{public MyView(Context context) {super(context);}@Overrideprotected void onDraw(Canvas canvas) {Paint paint = new Paint();//定义一个画笔paint.setAntiAlias(true);//使用抗锯齿功能Bitmap bitmap_bg = BitmapFactory.decodeResource(MainActivity.this.getResources(),R.drawable.background);canvas.drawBitmap(bitmap_bg, 0, 0, paint);//绘制背景RectF rect = new RectF(0, 0, 280, 180);canvas.translate(40, 20);//将画布在X轴上平移40像素，在Y轴上平移20像素//为图片添加描边paint.setStyle(Style.STROKE);//设置填充样式为描边paint.setColor(Color.BLACK);//设置颜色为褐色paint.setStrokeWidth(2);//设置笔触宽度为2像素canvas.drawRoundRect(rect, 10, 10, paint);//绘制一个描边的圆角矩形paint.setStyle(Style.FILL);//设置填充样式为填充Bitmap bm = BitmapFactory.decodeResource(MainActivity.this.getResources(),R.drawable.img02);//创建一个在水平方向上重复，在垂直方向上镜像的BitmapShader对象BitmapShader bs = new BitmapShader(bm, TileMode.REPEAT, TileMode.MIRROR);paint.setShader(bs);//设置渲染对象canvas.drawRoundRect(rect, 0, 0, paint);//绘制使用BitmapShader渲染的圆角矩形super.onDraw(canvas);}    }}

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